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<p>A curve fitter using cubic splines.  
 <a href="class_qwt_spline_curve_fitter.html#details">More...</a></p>

<p><code>#include &lt;<a class="el" href="qwt__curve__fitter_8h_source.html">qwt_curve_fitter.h</a>&gt;</code></p>
<div class="dynheader">
Inheritance diagram for QwtSplineCurveFitter:</div>
<div class="dyncontent">
<div class="center"><img src="class_qwt_spline_curve_fitter__inherit__graph.png" border="0" usemap="#_qwt_spline_curve_fitter_inherit__map" alt="Inheritance graph"/></div>
<map name="_qwt_spline_curve_fitter_inherit__map" id="_qwt_spline_curve_fitter_inherit__map">
<area shape="rect" id="node2" href="class_qwt_curve_fitter.html" title="Abstract base class for a curve fitter. " alt="" coords="23,5,134,32"/>
</map>
<center><span class="legend">[<a target="top" href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>
Public Types</h2></td></tr>
<tr class="memitem:a8c5e6858f885b5691c30092a950879a8"><td class="memItemLeft" align="right" valign="top">enum &#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">FitMode</a> { <a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8ae19b8325da178d410cf10b04ed5a5df6">Auto</a>, 
<a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8a97f3e821b70470f056b60a883229ec13">Spline</a>, 
<a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8a877f71e694ae9a2e33533a3fb5065c66">ParametricSpline</a>
 }</td></tr>
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</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a98ae80240b254df85dcc44e1f3e4e830"><td class="memItemLeft" align="right" valign="top"><a id="a98ae80240b254df85dcc44e1f3e4e830"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a98ae80240b254df85dcc44e1f3e4e830">QwtSplineCurveFitter</a> ()</td></tr>
<tr class="memdesc:a98ae80240b254df85dcc44e1f3e4e830"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:a98ae80240b254df85dcc44e1f3e4e830"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a933ecbf859698978104d0dd4ec2a2f6a"><td class="memItemLeft" align="right" valign="top"><a id="a933ecbf859698978104d0dd4ec2a2f6a"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a933ecbf859698978104d0dd4ec2a2f6a">~QwtSplineCurveFitter</a> ()</td></tr>
<tr class="memdesc:a933ecbf859698978104d0dd4ec2a2f6a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a933ecbf859698978104d0dd4ec2a2f6a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8381be57ee16b5a2bdacafbd5d71908b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a8381be57ee16b5a2bdacafbd5d71908b">setFitMode</a> (<a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">FitMode</a>)</td></tr>
<tr class="separator:a8381be57ee16b5a2bdacafbd5d71908b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae44a65faa0953ba390a4a17d8ebb7082"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">FitMode</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#ae44a65faa0953ba390a4a17d8ebb7082">fitMode</a> () const</td></tr>
<tr class="separator:ae44a65faa0953ba390a4a17d8ebb7082"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7f819ad010b19d58179655e4ceb1c6f1"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a7f819ad010b19d58179655e4ceb1c6f1">setSpline</a> (const <a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp;)</td></tr>
<tr class="separator:a7f819ad010b19d58179655e4ceb1c6f1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a968c67ccf4ebf4642ceb9cf749e3642d"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#a968c67ccf4ebf4642ceb9cf749e3642d">spline</a> () const</td></tr>
<tr class="separator:a968c67ccf4ebf4642ceb9cf749e3642d"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac501260a25953e1ded6bbc84c3250fa8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#ac501260a25953e1ded6bbc84c3250fa8">spline</a> ()</td></tr>
<tr class="separator:ac501260a25953e1ded6bbc84c3250fa8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af468f8218d57a2e8d07f4bf6aafda8dc"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#af468f8218d57a2e8d07f4bf6aafda8dc">setSplineSize</a> (int)</td></tr>
<tr class="separator:af468f8218d57a2e8d07f4bf6aafda8dc"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af7cc3a6b3dc82736e643bf5b346b2c6e"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#af7cc3a6b3dc82736e643bf5b346b2c6e">splineSize</a> () const</td></tr>
<tr class="separator:af7cc3a6b3dc82736e643bf5b346b2c6e"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac91df6881bd84143efcc891344a84a7b"><td class="memItemLeft" align="right" valign="top">virtual QPolygonF&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_spline_curve_fitter.html#ac91df6881bd84143efcc891344a84a7b">fitCurve</a> (const QPolygonF &amp;) const</td></tr>
<tr class="separator:ac91df6881bd84143efcc891344a84a7b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_qwt_curve_fitter"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_qwt_curve_fitter')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_qwt_curve_fitter.html">QwtCurveFitter</a></td></tr>
<tr class="memitem:a62919f309f0441d94adea94573d0f778 inherit pub_methods_class_qwt_curve_fitter"><td class="memItemLeft" align="right" valign="top"><a id="a62919f309f0441d94adea94573d0f778"></a>
virtual&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#a62919f309f0441d94adea94573d0f778">~QwtCurveFitter</a> ()</td></tr>
<tr class="memdesc:a62919f309f0441d94adea94573d0f778 inherit pub_methods_class_qwt_curve_fitter"><td class="mdescLeft">&#160;</td><td class="mdescRight">Destructor. <br /></td></tr>
<tr class="separator:a62919f309f0441d94adea94573d0f778 inherit pub_methods_class_qwt_curve_fitter"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pro_methods_class_qwt_curve_fitter"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_class_qwt_curve_fitter')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="class_qwt_curve_fitter.html">QwtCurveFitter</a></td></tr>
<tr class="memitem:ad804660017ae0f3ede604470724b3df3 inherit pro_methods_class_qwt_curve_fitter"><td class="memItemLeft" align="right" valign="top"><a id="ad804660017ae0f3ede604470724b3df3"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_qwt_curve_fitter.html#ad804660017ae0f3ede604470724b3df3">QwtCurveFitter</a> ()</td></tr>
<tr class="memdesc:ad804660017ae0f3ede604470724b3df3 inherit pro_methods_class_qwt_curve_fitter"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor. <br /></td></tr>
<tr class="separator:ad804660017ae0f3ede604470724b3df3 inherit pro_methods_class_qwt_curve_fitter"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A curve fitter using cubic splines. </p>
</div><h2 class="groupheader">Member Enumeration Documentation</h2>
<a id="a8c5e6858f885b5691c30092a950879a8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8c5e6858f885b5691c30092a950879a8">&#9670;&nbsp;</a></span>FitMode</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">enum <a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">QwtSplineCurveFitter::FitMode</a></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Spline type The default setting is Auto </p><dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#a8381be57ee16b5a2bdacafbd5d71908b">setFitMode()</a>, <a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">FitMode()</a> </dd></dl>
<table class="fieldtable">
<tr><th colspan="2">Enumerator</th></tr><tr><td class="fieldname"><a id="a8c5e6858f885b5691c30092a950879a8ae19b8325da178d410cf10b04ed5a5df6"></a>Auto&#160;</td><td class="fielddoc"><p>Use the default spline algorithm for polygons with increasing x values ( p[i-1] &lt; p[i] ), otherwise use a parametric spline algorithm. </p>
</td></tr>
<tr><td class="fieldname"><a id="a8c5e6858f885b5691c30092a950879a8a97f3e821b70470f056b60a883229ec13"></a>Spline&#160;</td><td class="fielddoc"><p>Use a default spline algorithm. </p>
</td></tr>
<tr><td class="fieldname"><a id="a8c5e6858f885b5691c30092a950879a8a877f71e694ae9a2e33533a3fb5065c66"></a>ParametricSpline&#160;</td><td class="fielddoc"><p>Use a parametric spline algorithm. </p>
</td></tr>
</table>

</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="ac91df6881bd84143efcc891344a84a7b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac91df6881bd84143efcc891344a84a7b">&#9670;&nbsp;</a></span>fitCurve()</h2>

<div class="memitem">
<div class="memproto">
<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">QPolygonF QwtSplineCurveFitter::fitCurve </td>
          <td>(</td>
          <td class="paramtype">const QPolygonF &amp;&#160;</td>
          <td class="paramname"><em>points</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">virtual</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
<p>Find a curve which has the best fit to a series of data points</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">points</td><td>Series of data points </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Curve points </dd></dl>

<p>Implements <a class="el" href="class_qwt_curve_fitter.html#afa9bf5b328aa553229e204533a60fec0">QwtCurveFitter</a>.</p>

</div>
</div>
<a id="ae44a65faa0953ba390a4a17d8ebb7082"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae44a65faa0953ba390a4a17d8ebb7082">&#9670;&nbsp;</a></span>fitMode()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">QwtSplineCurveFitter::FitMode</a> QwtSplineCurveFitter::fitMode </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="section return"><dt>Returns</dt><dd>Mode representing a spline algorithm </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#a8381be57ee16b5a2bdacafbd5d71908b">setFitMode()</a> </dd></dl>

</div>
</div>
<a id="a8381be57ee16b5a2bdacafbd5d71908b"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8381be57ee16b5a2bdacafbd5d71908b">&#9670;&nbsp;</a></span>setFitMode()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void QwtSplineCurveFitter::setFitMode </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="class_qwt_spline_curve_fitter.html#a8c5e6858f885b5691c30092a950879a8">FitMode</a>&#160;</td>
          <td class="paramname"><em>mode</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Select the algorithm used for building the spline</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">mode</td><td>Mode representing a spline algorithm </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#ae44a65faa0953ba390a4a17d8ebb7082">fitMode()</a> </dd></dl>

</div>
</div>
<a id="a7f819ad010b19d58179655e4ceb1c6f1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a7f819ad010b19d58179655e4ceb1c6f1">&#9670;&nbsp;</a></span>setSpline()</h2>

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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void QwtSplineCurveFitter::setSpline </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp;&#160;</td>
          <td class="paramname"><em>spline</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Assign a spline</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">spline</td><td>Spline </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#ac501260a25953e1ded6bbc84c3250fa8">spline()</a> </dd></dl>

</div>
</div>
<a id="af468f8218d57a2e8d07f4bf6aafda8dc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#af468f8218d57a2e8d07f4bf6aafda8dc">&#9670;&nbsp;</a></span>setSplineSize()</h2>

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      <table class="memname">
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          <td class="memname">void QwtSplineCurveFitter::setSplineSize </td>
          <td>(</td>
          <td class="paramtype">int&#160;</td>
          <td class="paramname"><em>splineSize</em></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Assign a spline size ( has to be at least 10 points )</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">splineSize</td><td>Spline size </td></tr>
  </table>
  </dd>
</dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#af7cc3a6b3dc82736e643bf5b346b2c6e">splineSize()</a> </dd></dl>

</div>
</div>
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<h2 class="memtitle"><span class="permalink"><a href="#a968c67ccf4ebf4642ceb9cf749e3642d">&#9670;&nbsp;</a></span>spline() <span class="overload">[1/2]</span></h2>

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          <td class="memname">const <a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp; QwtSplineCurveFitter::spline </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Spline </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#a7f819ad010b19d58179655e4ceb1c6f1">setSpline()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#ac501260a25953e1ded6bbc84c3250fa8">&#9670;&nbsp;</a></span>spline() <span class="overload">[2/2]</span></h2>

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          <td class="memname"><a class="el" href="class_qwt_spline.html">QwtSpline</a> &amp; QwtSplineCurveFitter::spline </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
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<dl class="section return"><dt>Returns</dt><dd>Spline </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#a7f819ad010b19d58179655e4ceb1c6f1">setSpline()</a> </dd></dl>

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<h2 class="memtitle"><span class="permalink"><a href="#af7cc3a6b3dc82736e643bf5b346b2c6e">&#9670;&nbsp;</a></span>splineSize()</h2>

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          <td class="memname">int QwtSplineCurveFitter::splineSize </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
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<dl class="section return"><dt>Returns</dt><dd>Spline size </dd></dl>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="class_qwt_spline_curve_fitter.html#af468f8218d57a2e8d07f4bf6aafda8dc">setSplineSize()</a> </dd></dl>

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